One of Queensland's new trains derails near Ipswich

One of Queensland's controversial new trains has derailed near Ipswich.

The New Generation Rollingstock engine was being towed through Ipswich just before 4.30pm when the derailment occured at Wulkuraka railway station.

The towing engine was left on its side and three of the passenger train's carriages were off the rails.

The new train was not in service when the incident happened so there were no passengers on board.

Two patients were assessed at the scene but neither needed to be taken to hospital, according to a Queensland Ambulance Service spokeswoman.

Last month, Deputy Premier and Transport Minister Jackie Trad finally announced the government would officially "accept" one of the NGR trains, about two years after they actually arrived in the country.

After the remaining 22 issues were fixed within a few weeks, the first of the trains were expected to start entering passenger service.

The first NGR trains were due to be operational in mid-2016.

Transport Minister Jackie Trad said the NGR train was being "shunted" when the incident happened and an investigation is underway.

However, an LNP spokesperson called for the incident to be independently investigated.

It was understood the NGR train involved had not been tested or officially accepted by the government. It is also believed the derailment was not caused by the NGR train.

More to come.